Marketaxess Holdings Inc

HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND MKTX

Report date

12/31/2025

Quarter

2025 Q4

Filed

2/13/2026

Shares

30,694

Value ($000)

5,563

Weight

0.0%

2019 Q4 - 2025 Q4 (17 filings)

Shares History

History scope: non-option holdings only (PUT/CALL rows excluded).

All 13F Holders	Filing date	Value ($000s)	% of Holdings	Shares	Reporting period
2025 Q4	2/13/2026	5,563	0.0%	30,694	12/31/2025
2025 Q3	11/13/2025	14,839	0.0%	85,158	9/30/2025
2025 Q2	8/13/2025	3,550	0.0%	15,896	6/30/2025
2025 Q1	5/14/2025	1,439	0.0%	6,650	3/31/2025
2023 Q4	3/21/2024	1	0.0%	5	12/31/2023
2023 Q1	5/12/2023	397	0.0%	1,014	3/31/2023
2022 Q4	2/13/2023	3,735	0.0%	13,394	12/31/2022
2022 Q3	11/14/2022	163	0.0%	734	9/30/2022
2022 Q2	8/11/2022	3,619	0.0%	14,136	6/30/2022
2021 Q4	2/11/2022	2,292	0.0%	5,573	12/31/2021
2021 Q3	11/10/2021	31	0.0%	73	9/30/2021
2021 Q2	8/12/2021	3,312	0.0%	7,144	6/30/2021
2021 Q1	5/13/2021	478	0.0%	960	3/31/2021
2020 Q4	3/1/2021	7,207	0.0%	12,632	12/31/2020
2020 Q3	3/1/2021	10,124	0.1%	21,021	9/30/2020
2020 Q2	3/1/2021	16,918	0.1%	33,774	6/30/2020
2019 Q4	2/12/2020	758	0.0%	2,000	12/31/2019